Hi,
here you can see and listen to a little example showing the odroid and his excellent software MIDI capabilities.

My playing piano is really a nightmare but it shell demonstrate how fast the ODROID-C1 can be with 3 different MIDI devices connected to it via I2C/WiFi/USB serial connection.

Connections:

ODROID-C1 <-> Arduino UNO with 18 paperclips: USB cable
ODROID-C1 <-> 4 x MPR121 (Touch Sensors): I2C
ODROID-C1 -> USB soundcard (very cheap): plugged into one of the USB ports
ODROID-C1 <-> Android Tablet: WiFi

Software running on the ODROID-C1:

connecting the hardware to the synth
jack
a2jmidi
ttymidi (serial connection to Arduino)
multimidicast ( WiFi connection to Tablet)

Soundgenerator:
zynaddsubfx

Thanks to the creators of:
ODROID-C1
Arduino UNO
Jack & all the jack tools
a2jmidi daemon
Zynaddsubfx
ttymidi
multimidicast
MPR121 (and breakout board)

and the producers of metal paperclips, of course.